Property and Equipment (Details) - Schedule of property and equipment - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total Property and Equipment	$ 39,232,000	$ 37,644,000
Less: Accumulated Depreciation	(30,828,000)	(28,063,000)
Property and Equipment, net	8,404,000	9,581,000
Land [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	300,000	300,000
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	1,723,000	1,683,000
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	22,013,000	21,738,000
Finance Lease Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	375,000	78,000
Tools and Instruments [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	12,866,000	12,116,000
Automotive Equipment [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	200,000	148,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	290,000	290,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	882,000	855,000
Computers and Software [Member]
Property, Plant and Equipment [Line Items]
Total Property and Equipment	$ 583,000	$ 436,000